Akar-Mechanical Clarifiers / Clarifloculators & Settlers

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1 Akar-Mechanical Clarifiers / Clarifloculators & Settlers Akar Impex Pvt. Ltd. ISO 9001 : 2008 Certified Company

2 Akar, a leader in clarifier manufacturing in India. Akar has developed technology and mastered the art of manufacturing circular mechanical scraper type clarifiers, clari-flocculators and different types of settlers; thanks to almost three decades of continuous interaction with clients followed by intensive research and development. Akar has earned a reputation as an honest and dependable supplier of reliable, long lasting and cost effective solutions and equipment in Wastewater and Water Treatment applications. Akar's reputation is noteworthy in the field of waste water treatment in general and circular mechanical clarifiers with central drive or peripheral drive clarifiers in particular. Akar has supplied hundreds of clarifiers of different types not only in India but all over the world; particularly in the Middle East, Sri Lanka, Bangladesh, Pakistan and in many other countries. The clarifiers manufactured and supplied by Akar range from seven meters dia. to above 5 meters dia. Our systems install quickly and operate efficiently for a much longer period. Our products are high quality, long lasting and low priced as compared to most manufacturers. This is because we design them with meticulous care in our design department and manufacture them in our own manufacturing shops. We have strong after sales service team unlike most of our competitors. There are many types of clarifiers in use for water and waste water treatment. Some of the popular ones are: Circular Clarifier with or without Mechanical Scraper. (Central Drive or Peripheral Drive) Rectangular Clarifier with Scraper Mechanism. Clari-Flocculator (Clarifier with Flocculator) Lamella Clarifier (also called settler). Akar manufactures and supplies all these types of clarifiers. COMPONENT OPTIONS: Weir plate (SS or FRP or plain Carbon steel epoxy painted) Scum guard and scum scrapper with scum collection trough. Shaft design or Cage design for imparting drive at centre. Akar manufactures two types of circular clarifiers with mechanical scraping mechanism. 1. Central drive Clarifiers with mechanical Scraper. 2. Peripheral Drive Clarifiers with Mechanical Scraper. Akar's range of mechanical circular Clarifiers (Central Drive) As the design of Akar Central Drive Circular Clarifiers with Mechanical Scraper Mechanism depends on the design of the basin, Akar Circular Clarifiers are tailor made to suit clients' specific needs. The range generally varies from 8 meters diameter to more than 40 meters dia. It is observed that Circular Clarifiers with Mechanical Scraper Mechanism for diameters exceeding 40 meters may result in excessive stress on the gearbox and may be designed only if unavoidable.

3 Salient Features of Akar Central Drive Circular Clarifier with Mechanical Scraper. 1. Akar is highly experienced and has supplied hundreds of Central Drive Circular Clarifiers with Mechanical Scraper Mechanism in many parts of the world. This includes Central Drive Circular Clarifiers with Mechanical Scraper Mechanism and Clariflocculators with Central Drive Mechanical Scraper Mechanism up to 40 meters diameter. These clarifiers are in use since more than two decades without any problems. 2. Akar's design is robust, simple and economical. Akar's products are economical to use and to service.. All the components are sand blasted and painted in paint booth with water resistant paints. 4. Usually the standard production clarifiers are made in Mild Steel / Carbon Steel. However, Akar manufactures full or part of clarifiers / clarifloculators in Stainless Steel construction on demand. 5. Only high grade materials, duly laboratory tested are used in manufacture. 6. Clarifier design is tested for longevity and reliability on advanced software to make it fool proof. 7. Akar conducts a series of performance tests in house, in its own design and testing facility and in simulated operating conditions to ensure high value for money to the buyers. 8. Akar's clarifiers come with several special optional features such as: a. Overload alarm b. Mechanical lifting device: To protect against overload if there be any excessive sludge accumulation in basin (when clarifier scraper mechanism is not operated for some days). c. Direct removal of sludge through the walkway bridge mounted pipe, if required by client. d. A special mechanical system to easily retrieve and repair arms and scraper blades. e. Variable Frequency Drive (V.F.D.) on motors to reduce output revolutions per minute and save energy, if required (as optional). Akar's 25 Meter Dia. Central Drive Circular Clarifier with Mechanical Scraper Mechanism installed at Ras-Al Khaima Government (U.A.E.) facility for their Sewage Treatment Plant 5 Meter Dia. Central Drive Circular Clarifiers with Mechanical Scraper Mechanism; supplied to paper mill in North India for their Industrial Effluent Treatment Plant. SCHEMATIC DIAGRAM OF CENTRAL DRIVE CIRCULAR MECHANICAL CLARIFIER WEIR PLATE

4 Circular Clarifier with Peripheral Drive Functionally, a Peripheral Drive Clarifier is similar to a Central Drive Circular Clarifiers with Mechanical Scraper Mechanism except that drive mechanism is different. In case of a Central Drive Circular Clarifier with Mechanical Scraper Mechanism, drive unit is located at the centre and the drive is transferred from motor through a train of speed reducing mechanisms (such as gearbox, chain and sprocket drive, belt drive etc.) finally to a central shaft. However, a Peripheral Drive Clarifier is fitted with drive mechanism located on the periphery of the clarifier tank. Akar manufactures and supplies peripheral drive clarifiers of different configurations as follows: With Cast iron (C.I.) wheels (with peripheral steel tracks, if required). These are heavy but economical and sturdy or with C.I. wheels and polyurethane tread or C.I. wheels and rubber tread. With walkway on one side or both sides. With or without Scum Scraper and Scum Guard. With or without all underwater parts in stainless steel. With or without Variable Frequency Drive. Expanded view of the Clarifier with Peripheral Drive with walkway and bridge. A Peripheral Drive Clarifier in operation at a Sewage Treatment Plant in Delhi. Advantages of Akar Peripheral Drive Clarifiers: Removable or retrievable arms for quick and easier maintenance. This avoids, dewatering the reservoir tank, when repair becomes necessary. In case there is any resistance to the scraping arms or in any other place, the wheels slip. This acts as a natural clutch avoiding any strain on the transmission. We do not design all the basins and processes for which we supply clarifiers or clariflocculators. However, if the whole system is designed by us, TSS comes down from 000 ppm to 20 ppm subject to proper operating conditions. All options, which are available in the case of circular central drive clarifiers, are also available in this case (peripheral drive), except for the drive system. Akar offers Variable Frequency Drives as optional to reduce the output rotation speed in revolutions per minute (R.P.M.), if client chooses. SCHEMATIC DIAGRAM OF PERIPHERAL DRIVE CIRCULAR MECHANICAL CLARIFIER MOTOR & GEAR ASSEMBLY WEIR PLATES

5 Clariflocculator In large water or Wastewater Treatment plants, flocculator and clarifier are combined together to achieve economy in construction. The combined unit of flocculator and clarifier is known as clariflocculator. Clariflocculator has two concentric tanks; with inner tank serving as flocculation basin and outer tank serving as clarifier. Where water has to be clarified through addition of flocculants and where design considerations demand, clariflocculators provide an optimum solution by giving high efficiency and economy of space and operation. In Akar clariflocculators, effluent mixed with flocculants is guided to the flocculation chamber. In the flocculation chamber, rapid settling flocs are formed. Clariflocculators are designed as to cater to the capacity requirement both in terms of flow of effluent as well as floc formation and settling time. Central Pillar Flocculators Peripheral Drive Drive Path A clariflocculator with Peripheral Drive in operation. A large (9 meters)diameter clarifier / clariflocculator frame under fabrication at one of Akar facilities. Akar clariflocculators are carefully designed to achieve faster flocculation and quick sedimentation of suspended matter. By achieving these twin objectives, Akar clariflocculators reduce foot print of the plant and thereby increase plant capacity. Gears and paddles are so designed and manufactured as to last over a decade under normal conditions, without requiring any major overhaul. There are many Akar equipment operating for more than ten years without any significant overhauling. Usage of corrosion resistant materials increase life of components and assemblies submerged in water. In the case of mild steel (carbon steel) a special treatment is given with corrosion resistant paint coatings to retard process of corrosion of submerged assemblies. All bush bearings are made from Aluminum Bronze metal. Akar designs and manufactures Clariflocculators in a wide variety of sizes and configurations as demanded by operating conditions. There are no fixed sizes and the sizes are determined either by clients or by operating conditions. There are hundreds of Clarifiers and Clariflocculators operating in India and in different parts of the world. Please ask Akar to send you a reference list of installations nearby your location. STEEL ROPE

6 SETTLING TANKS / LAMELLA / PARALLEL PLATES / TUBE SETTLER As mentioned earlier, there are many types and varieties of settling tanks. Akar designs and manufactures all of them. Amongst them are also included simple conical bottom settling tanks, lamella settling tanks, parallel plates settling tanks, tube type settling tanks etc. In recent years, a lot of research and development has gone into introducing various types of plastic media, which enhance settling time and reduce space requirement. Akar utilizes different types of shapes and sizes and media to offer the best value for money to its clients. Capacity Criteria Model Power KW Inlet RPM Motor Volts Motor Phase Freq. Hz Protection Enclosure Central Drive Upto 5 ACCL-B 0.75 Shaft & Rake Single Scraper Above 5 and Upto 10 ACCL-C 0.75 Shaft & Rake Single Scraper Peripheral Drv. CLARIFLOCCULATOR ARRANGEMENTS Number of Flocculators KW Power of Flocculat 2 2 Power cable: 4 Sq.mm X 4 Core Copper armed ITEM 11 to 18 ACCL-D Shaft & Rake cage type Single Scraper 2 / 19 to 28 ACCL-E Cage & Rake Multiple Scrapers 4 Akar's two lamella settlers supplied to a Textile Dyeing unit in operation in Bangladesh TECHNICAL SPECIFICATIONS AKAR CLARIFIERS, CLARIFLOCULATORS AND SETTLING TANKS (Specifications are subject to change without notice. Please check before ordering) Bridge Central Shaft Railing Rake Arm Central Bush Weir Plate Primary Gear Final Gear Central Cage Squeeze rubber Nuts / Bolts / Washers Under water Nuts Bolts Washers Above water M.O.C. Flocculator MAKES OF OUT OURCED EQUIPMENT Gear Box Type of gear box 29 to 40 ACCL-F 2.2 Cage & Rake Rake with Multiple Scrapers 4 MATERIAL OF CONSTRUCTION (Subject to change without notice. Please check before ordering) STANDARD PRODUCTION Mild Steel Seamless Pipe Mild Steel Pipe / M.S.Angle Worm reduction S.G.Iron Neoprene S.S. 04 G.I. Mild Steel Epoxy Coated Elecon / Radicon / Premier Worm reduction OPTIONAL 41 to 60 meters 4 M.S. with Epoxy Paint or Alu. paint with Aluminium / S.S.Chequered Plate S.S Seamless Pipe Aluminium / S.S Pipe S.S. FRP / SS / Aluminium Worm Reduction S.G.Iron S.S. (04or 16) Neoprene S.S.16 As specified (G.I. or S.S.) As specified, if feasible As specified, if available Worm reduction ACCL-G.7 Cage & Rake Rake with Multiple Scrapers Akar Impex Pvt. Ltd. E-9, Sector-6, Noida, U.P., 20101, India, Ph.: (20 Lines), Fax: akarimpex@hotmail.com, akarimpex@gmail.com Web: Pune office: Works: D-145, E.P.I.P., U.P.S.I.D.C. Industrial Area, Site-V, Kasna, Greater Noida, Dist. Gautambudh Nagar, U.P.